This was my last AR to get gold, I also struggled with it. I have no problem with burst fire / single fire weapons but this just annoyed the hell out of me. It's better in HC.
And the secret that makes this guns accuracy 1000% better: Silencer
It is very powerful when used at mid-long ranges, i rage when i get killed in 1 burst -.- but i have had a few swarms with it, usually on turbine and carrier